<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    
</body>
</html>
<script>
    function ddd(a,b,c){
        console.log(a+b+c)
    }
    ddd(1,2,3)


    function aaa(a){
        return function(b){
            return function(c){
                console.log(a+b+c);
            }
        }
    }
    aaa(10)(20)(30)
</script>